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All Journal VALENSI Reaktor Jurnal Ilmu Dasar IPTEK Journal of Proceedings Series IPTEK The Journal for Technology and Science Jurnal Sains dan Teknologi Jurnal Bahan Alam Terbarukan Journal of Mathematical and Fundamental Sciences Alchemy Jurnal Penelitian Kimia Jurnal Zeolit Indonesia ALCHEMY Jurnal Penelitian Kimia Indonesian Journal of Chemistry Akta Kimia Indonesia Chemistry Indonesian Journal of Chemical Research QARDHUL HASAN: MEDIA PENGABDIAN KEPADA MASYARAKAT Walisongo Journal of Chemistry Automotive Experiences Makara Journal of Science Sewagati International Journal of Renewable Energy Development Bulletin of Chemical Reaction Engineering & Catalysis
Didik Prasetyoko
Institut Teknologi Sepuluh Nopember
Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Astronomy Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Public Health Social Sciences Other

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Synthesis of Amorphous Aluminosilicates from Bintan’s Red Mud as Alumina Source Futri Wulandari; Eka Putra Ramdhani; Yatim Lailun Ni’mah; Ahmad Anwarud Dawam; Didik Prasetyoko
Indonesian Journal of Chemistry Vol 18, No 4 (2018)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (499.33 KB) | DOI: 10.22146/ijc.25184

Abstract

Red mud is a generated by-product in alumina production from bauxite ore. In this study, Bintan’s red mud has been used as alumina and silica source to synthesize amorphous mesoporous aluminosilicates material. Alkali fusion method with a NaOH/red mud ratio 0.8; 1.0; 1.2; 1.4 and 1.5 followed by hydrolysis method was used to extract dissolved alumina and silica from red mud. Synthesis of amorphous aluminosilicates by hydrothermal method was conducted at 80 °C for 24 h. Cetyltrimethylammonium bromide (CTABr) was added as the structure directing agent. Aluminosilicate products were characterized using FTIR spectroscopy (Fourier Transform Infra-Red Spectroscopy), XRD (X-ray Diffraction), SEM (Scanning Electron Microscopy), and nitrogen adsorption-desorption. XRD and SEM result shows that the product was amorphous with low uniformity in terms of surface morphology and particle size. Nitrogen adsorption-desorption profile shows that all aluminosilicates products has a meso pore structure, confirmed by the highest pore distribution at 3.05–17.70 nm. The highest surface area and pore volume were obtained in ASM 0.8 (NaOH/red mud ratio = 0.8) i.e. 177.97 m2/g and 1.09 cm3/g, respectively.
Direct Synthesis of Sodalite from Kaolin: The Influence of Alkalinity Meyga Evi Ferama Sari; Suprapto Suprapto; Didik Prasetyoko
Indonesian Journal of Chemistry Vol 18, No 4 (2018)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (321.761 KB) | DOI: 10.22146/ijc.25191

Abstract

Alkalinity is one of the most important factors that influence the crystallization process of zeolite and the product properties. The influence of alkalinity on the synthesis of sodalite from kaolin without calcinations was reported in this research. The synthesis of sodalite using molar ratio of Na2O/Al2O3 = x, H2O/Na2O = 128/x and SiO2/Al2O3 = 2/x, where x was the variation of molar ratio of alkalinity: 10, 20, 30, and 40. The synthesis has done by stirring for 6 h, without aging, and the crystallization time was 24 h under hydrothermal method (100 °C). The products were characterized by X-ray Diffraction (XRD), Fourier Transform Infrared Spectroscopy (FTIR), and Scanning Electron Microscopy-Energy Dispersive X-ray (SEM-EDX). The X-ray diffraction pattern and infrared spectroscopy shown that pure sodalite was formed by using molar ratio of alkalinity 10, 20, and 30. The crystallinity and particle size increase along with increasing of alkalinity. Quartz was formed by using molar ratio of alkalinity 40.
Selective Hierarchical Aluminosilicates for Acetalization Reaction with Propylene Glycol Hartati Hartati; Mardi Santoso; Hadi Nur; Leaw Wai Loon; Hasliza Bahruji; Imroatul Qoniah; Didik Prasetyoko
Indonesian Journal of Chemistry Vol 19, No 4 (2019)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (90.112 KB) | DOI: 10.22146/ijc.40106

Abstract

Hierarchical micro-mesoporous aluminosilicates nanoparticles were synthesized at different of Si/Al ratios and were directly used as a solid acid catalyst for acetalization reaction with propylene glycol. TEM and N2 adsorption analysis of the resulting aluminosilicates revealed the formation of the hierarchical structure occurs on the Si/Al ratio increases the formation of mesoporous within the structure of aluminosilicate. The aluminosilicates exhibit high selectivity towards acetalization reaction in comparison with the homogeneous PTSA. The presence of mesoporous structures is crucial for increased conversion and selectivity of the reaction which presumably due to the improved diffusion of substrate to reach acid sites.
The Biotransformation and Biodecolorization of Methylene Blue by Xenobiotic Bacterium Ralstonia pickettii Adi Setyo Purnomo; Asranudin Asranudin; Didik Prasetyoko; Yulinar Dwi Nur Azizah
Indonesian Journal of Chemistry Vol 21, No 6 (2021)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.65806

Abstract

The biotransformation and biodecolorization of methylene blue (MB) dye using the bacterium Ralstonia pickettii was investigated. This experiment was conducted in a nutrient broth (NB) medium after adding MB at 100 mg L–1 concentration. Approximately 98.11% of MB was decolorized after 18 h of incubation. In addition, the metabolic products detected by LC-TOF/MS were Azure A (AA), thionine, leuco-MB, and glucose-MB, which indicated the MB degradation through a reductase that attacked the heterocyclic central chromophore group present in the structure. Moreover, azure A and thionine fragments resulted from the N-demethylase enzyme that attacked the auxochrome group. Thus, this research was assumed to be the first scientific report suggesting the potential to use R. pickettii in the biodecolorization and biotransformation of dye waste, particularly MB.
Simple and Green Preparation of ZnO Blended with Highly Magnetic Silica Sand from Parangtritis Beach as Catalyst for Oxidative Desulfurization of Dibenzothiophene Wega Trisunaryanti; Safa Annissa Novianti; Dyah Ayu Fatmawati; Triyono Triyono; Maria Ulfa; Didik Prasetyoko
Indonesian Journal of Chemistry Vol 22, No 2 (2022)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.69938

Abstract

Simple and green preparation of ZnO blended with Parangtritis beach sand (BS) catalysts for oxidative desulfurization of dibenzothiophene (ODS-DBT) has been conducted. The ZnO-BS catalysts were prepared by blending ZnO with beach sand under a weight ratio of 1:1, 1:2, and 1:4, and then heated by microwave (MW) at 540 watts for 30 min, resulting in BS-MW, ZnO-MW, ZnO-BS-1-MW, ZnO-BS-2-MW, and ZnO-BS-4-MW, respectively. As a comparison, the ZnO-BS-1 was also heated by oven at 100 °C for 30 min produced ZnO-BS-1-OV. Each product was characterized by XRF, XRD, FTIR, acidity test by NH3 vapor adsorption, SAA, SEM-EDX, TEM, and magneticity test by an external magnetic field. Furthermore, each material was applied for ODS-DBT, and its product was analyzed by UV-Vis spectrophotometer and FTIR. The results showed that ZnO-BS-1-OV had the highest acidity of 2.3486 mmol/g and produced the highest DBT removal efficiency through the ODS reaction of 81.59%. The use of catalysts in ODS-DBT does not affect the main structure of the treated fuel. Therefore, the combination of ZnO with BS can provide good performance in ODS activity and facilitate the separation of catalysts after the reaction due to its magnetic iron oxide content.
Synthesis of 2-Hydroxyethyl Esters from Castor Oil as Lubrication Bio-Additive Candidates for Low-Sulfur Fossil Diesel Arizal Firmansyah; Yulfi Zetra; Rafwan Year Perry Burhan; Didik Prasetyoko; Novesar Jamarun
Indonesian Journal of Chemistry Vol 22, No 3 (2022)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.73038

Abstract

The present work aims to study the synthesis of 2-hydroxyethyl esters from castor oil and its lubrication properties, promising as a lubrication bio-additive in low sulfur diesel fuel. This compound has been successfully synthesized from castor oil and ethylene glycol. The oil to ethylene glycol molar ratio was adjusted to 1:10, and the catalyst loading was used at 9% mole oil. Then, the mixture was refluxed for 5 h. The product components were characterized using GC-MS. The standard ASTM method was used to study the kinematic viscosity and lubrication. The product was dominated by 2-hydroxyethyl esters (94.16%), di-ester (1.12%), and cyclic ester (1.92%). The analysis of friction coefficient and wear scar diameter (WSD) using High-Frequency Reciprocating Rig (HFRR) shows the coefficient of friction and WSD of the product better than reference diesel fuel. From the results of this study, the 2-hydroxyethyl ester of castor oil, especially 2-hydroxyethyl ricinoleate, is the main responsible for the lubricating properties. Thus, 2-hydroxyethyl esters of castor oil can be proposed as an alternative bio-additive to improve the lubrication of low-sulfur fossil diesel fuels.
Effect of Ag addition into the Activity of Titanium Silicate-1 Catalyst in Cyclohexanone Reaction Dyah Fitasari; Didik Prasetyoko; Suprapto Suprapto
Walisongo Journal of Chemistry Vol 4, No 2 (2021): Walisongo Journal of Chemistry
Publisher : Department of Chemistry Faculty of Science and Technology Walisongo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21580/wjc.v4i2.9384

Abstract

Titanium Silicate-1 (TS-1) has been successfully modified by combining Silver (Ag) metals. In this study, the preparation of Ag/TS-1 was carried out by impregnation method using a solution of silver nitrate (AgNO3) as a precursor to TS-1 with a loading variation of 0.5%, 1%, 2%, and 4%. Impregnation carried out on TS-1 aims to disperse Ag (1) only attached to the surface of TS-1 particles (before calcination/TK) and (2) on the entire surface of TS-1 particles (after calcination/K). The synthesized catalyst was then characterized by X-ray diffraction, infrared spectroscopy, and pyridine adsorption techniques. The XRD pattern shows that all the catalysts have high crystallinity with MFI structure, and there is no other crystalline phase. The infrared spectra showed that the titanium tetrahedral in TS-1 remained after Ag impregnation. The TS-1 and Ag/TS-1 catalysts were analyzed for their surface acidity using pyridine adsorption on the sample. The pyridine adsorption technique showed the presence of Lewis sites on Ag/TS-1. In this study, the presence of Ag loading on the Ag/TS-1 catalyst affected the TS-1 catalytic activity. The amount of cyclohexanone oxime product produced in XAg/TS-1 was more than in Ag/TS-1.
Transesterification of Waste Cooking Oil using CaO Catalyst Derived from Madura Limestone for Biodiesel Production and Its Application in Diesel Engine Abdul Hamid; Amin Jakfar; Sirly Bifadilatur Romaniyah; Ike Dayi Febriana; Mohammad Abdullah; Zeni Rahmawati; Didik Prasetyoko
Automotive Experiences Vol 6 No 1 (2023)
Publisher : Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/ae.7879

Abstract

In this study, we report biodiesel production from waste cooking oil using CaO catalyst derived from Madura limestone through a transesterification reaction. Many limestone quarries in Madura can be used as heterogeneous catalysts because they are cheap, easy to separate, and have high basicity. Conversion of limestone into CaO catalyst through calcination at 900°C for 3 hours. The CaO catalyst formed was characterized using X-Ray Diffraction (XRD), Fourier Transform Infra-Red (FTIR), and Scanning Electron Microscopy-Energy Dispersive X-Ray (SEM-EDX) instruments. Biodiesel formed through the transesterification reaction was analyzed using GC-MS. Furthermore, biodiesel blends from waste cooking oil and pure diesel were prepared in volume percentages (B-10, B-20, B-30, B-40, and B-100) for testing on diesel engine performance. The results of testing the highest torque and brake horsepower (BHP) were obtained on pure diesel fuel (S-100) at 2.49 Nm and 381.12 watts, respectively. The lowest fuel consumption at 1500 rpm is produced on the B-20 at 0.186 kg/h. Overall, the emission characteristics of carbon monoxide (CO), nitrogen oxides (NOx), and nitrogen monoxide (NO) with the lowest concentration resulted from biodiesel blends rather than pure diesel.
Pengolahan Limbah Pewarna Batik di Desa Klampar Kecamatan Proppo Kabupaten Pamekasan dengan Penerapan Adsorben Superadsorpsi Adi Setyo Purnomo; Didik Prasetyoko; Hendro Nurhadi; Muhammad Lukman Hakim; Asranudin; Taufiq Rinda Alkas; Eka Pratiwi Yuniarti; Alya Awinatul Rohmah; Badzlin Nabilah
Sewagati Vol 6 No 2 (2022)
Publisher : Pusat Publikasi ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1010.095 KB) | DOI: 10.12962/j26139960.v6i2.189

Abstract

Industri batik di Indonesia didominasi oleh kelompok UMKM yang tersebar di seluruh Nusantara. Hampir setiap daerah terdapat industri batik yang mencirikan budaya daerah. Salah satu UMKM batik yang sedang digalakkan oleh pemerintah adalah UMKM batik Madura di Desa Klampar, Kecamatan Proppo, Kabupaten Pamekasan. Wilayah Klampar telah ditetapkan sebagai kampung batik melalui surat keputusan Bupati Pamekasan. UMKM batik di Desa Klampar hampir sama seperti di daerah lain, namun produk batik dengan motif Madura yang kuat telah menjadi ciri khas produk kain atau pakaian batik jadi. UMKM batik di Desa Klampar menggunakan pewarna sintetik yaitu Remazol dan Naftol dalam pewarnaannya. Sekitar 15 tahun terakhir mereka menggunakan Remazol dan Naftol secara masif bahkan bahan kimia lainnya seperti HCl dan Hipoklorit sebagai pemudar. Pengetahuan bahan berbahaya dan beracun oleh UMKM Desa Klampar sangat rendah yang ditandai dengan pembuangan limbah sisa pencucian atau perendaman batik secara langsung. Berdasarkan kasus penanganan limbah yang buruk, maka tim abdimas ITS telah mendiseminasikan paket teknologi dekolorator basis kolom matriks adsorben super adsorpsi dari hasil riset laboratorium kimia. Reaktor terhubung dengan tabung dekolorator yang berisi adsorben arang aktif-silika-zeolit. Sistem ini dapat menghilangkan limbah pewarna menjadi larutan yang aman dibuang di lingkungan. Tim abdimas telah menyerahkan 1 unit reaktor kepada UMKM batik Mawar di Desa Klampar dengan harapan akan memberikan dampak signifikan terhadap kontaminasi lingkungan pertanian dan perairan di sekitar mitra UMKM Batik Mawar di Desa Klampar.
Decolorization of Methylene Blue Dye Using ZnO/ZSM-5 Photocatalyst under UV-LED Irradiation Lely Dwi Astuti; Yuly Kusumawati; Didik Prasetyoko; Wahyu Bambang Widayatno; Abdul Hamid
ALCHEMY Jurnal Penelitian Kimia Vol 16, No 2 (2020): September
Publisher : UNIVERSITAS SEBELAS MARET (UNS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/alchemy.16.2.42985.232-239

Abstract

The present research studied about decolorization of methylene blue dye using photocatalyst ZnO/ZSM-5 under UV-LED lamp. ZnO/ZSM-5 was synthesized using the impregnation method by adding two grams ZSM-5 to Zn solution 0.3 M 10 mL. Photocatalyst was characterized using X-ray diffractometer (XRD), Fourier transform infrared (FTIR), field emission scanning electron microscopy-energy dispersive X-Ray (FESEM-EDX), and surface area analyzer (SAA). Analysis using XRD show addition characteristic peaks of ZnO at 2θ 31.60°, 34.21°, 36.08°, 47.35°, 56.50°, 62.73°, 67.83°, that indicates a successful impregnation process. The photocatalysis activity test was done on methylene blue dye 100 mg L-1. ZSM-5 and ZnO activities were tested under UV-LED irradiation and dark conditions. Data showed that percent removal of dye occurred on ZnO/ZSM-5 under 15 minutes irradiation is 78.32%.
Co-Authors Abdul Hamid Abdul Hamid Abdul Hamid Abdulloh Abdulloh Adi Setyo Purnomo Afifah Rosidah Afifah Rosyidah Ahmad Anwarud Dawam Ahmad Anwarud Dawam Ahmad Anwarud Dawam Ahmad, Shahrul Nizam Aishah Abdul Jalil Aishah Abdul Jalil Aishah Abdul Jalil Aishah Abdul Jalil Alfa Akustia Widati Alya Awinatul Rohmah Amalia Putri Purnamasari Amin Jakfar, S.T.,M.T., Lukman Hadiwijaya, S.T.,M.T. Amirul Mukminin Anil Kumar Anal Anis Farika Anis Farika, Anis Arief Fadlan Arizal Firmansyah Asranudin Asranudin, Asranudin Badzlin Nabilah Bayu Wiyantoko Cepi Kurniawan Che Ku Nor Liana Che Ku Hitam Cholifah Endah Royani Cicik Herlina Yulianti Desy T. Kusumaningtyas Desy Tri Kusumaningtyas Dety Oktavia Sulistiono Dewi, Nita Safira Didi Dwi Anggoro Djoko Hartanto Djoko Hartanto Djoko Hartanto Dyah Ayu Fatmawati Dyah Fitasari Eka Pratiwi Yuniarti Eka Putra Ramdhani Eko Santoso Endang Purwanti Endud, Salasiah F Widhi Mahatmanti Farhanah Thalib Fensia Analda Souhoka Firda, Putri Bintang Dea Futri Wulandari H. Holilah Hadi Nur Hadi Nur Hadi Nur Hamzah Fansuri Haq, Ismi Arinal Harjito - Harjito Harjito Harmami Harmami Hartati Hartati Hartati Hartati Hasliza Bahruji Hasliza Bahruji Hasliza Bahruji Hasliza Bahruji Hellna Tehubijuluw Hendro Nurhadi Ika Diah Rahmawati Ike Dayi Febriana Imroatul Qoniah Imroatul Qoniah Imroatul Qoniah Imroatul Qoniah Imroatul Qoniah Imroatul Qoniah Izzah, Adiba Naila Kris Murwani, Irmina Kurniawati, Puji Kurniawati, Puji Kusumawati, Yuly Le Monde, Brilliant Umara Leaw Wai Loon Lely Dwi Astuti Lisa Amalia Suryana Lukman Atmaja Mardi Santoso Maria Ulfa Maria Ulfa Maria Ulfa Meiske S Sangi Meyga E. F. Sari Meyga Evi Ferama Sari Mohammad Abdullah Mudasir Mudasir Muhammad Lukman Hakim Muhammad Nur Kholis Muhammad Nur Kholis Mulyatun Mulyatun Naimatul Khoiroh Nanik Siti Aminah Nanik Wijayati Neneng Ayunanda Novesar Jamarun Nuni Widiarti Nur, Hadi Nurdiani, Maulida Nurul - Widiastuti Pemta Tiadeka Puji Kurniawati Qurrota A’yuni R.Y. Perry Burhan, R.Y. Perry Rahayu, Endah Fitriani Rakhmadi Harsanto Ramli, Zainab Ratna Ediati Ratna Ediati Reva Edra Nugraha Safa Annissa Novianti Salasiah Endud Samuel Budi Wardhana Samuel Budi Wardhana Kusuma Santi Wulan Purnami Sirly Bifadilatur Romaniyah Siti Maryam Subagyo, Riki Suci Indrayani Sugeng Triwahyono Sugeng Triwahyono Sugeng Triwahyono Sugeng Triwahyono Suprapto Suprapto Suprapto Suprapto Suprapto Suprapto Suprapto Suprapto Suprapto Suprapto Suprapto Suprapto Suprapto Suprapto Suprapto Suprapto Suprapto Suprapto Suprapto Suprapto Suprapto Suprapto Suprapto, Suprapto Suprapto, Surapto Susi Nurul Khalifah Syafsir Akhlus Syafsir Akhlus, Syafsir Tanti Kartika Dewi Taufiq Rinda Alkas Teguh Endah Saraswati Tikha Reskiani Fauziah Titie Prapti Oetami Titie Prapti Oetami Tri Ana Mulyati Tri Esti Purbaningtias Tri Wahyuni Tri Wahyuni Tri wahyuni Triyono Triyono Triyono Triyono Wahyu Bambang Widayatno Wega Trisunaryanti Wega Trisunaryanti Wega Trisunaryanti Wijianto, Wijianto Wiyantoko, Bayu Wiyantoko, Bayu Yatim Lailun Ni’mah Yoshifumi Chisaki Yulinar Dwi Nur Azizah Yusuf Muhammad Zein Yusuf Muhammad Zein Yuvita Eka Pertiwi Zahrotul Istiqomah Zainab Ramli Zainab Ramli Zainab Ramli Zainab Ramli Zakaria, Zaki Yamani Zeni Rahmawati Zetra, Yulfi